Mercurial > hg > nginx
view src/core/ngx_bpf.c @ 9155:35bb47f65cab
Upstream: fixed handling of Status headers without reason-phrase.
Status header with an empty reason-phrase, such as "Status: 404 ", is
valid per CGI specification, but looses the trailing space during parsing.
Currently, this results in "HTTP/1.1 404" HTTP status line in the response,
which violates HTTP specification due to missing trailing space.
With this change, only the status code is used from such short Status
header lines, so nginx will generate status line itself, with the space
and appropriate reason phrase if available.
Reported at:
https://mailman.nginx.org/pipermail/nginx/2023-August/EX7G4JUUHJWJE5UOAZMO5UD6OJILCYGX.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 31 Aug 2023 22:59:17 +0300 |
parents | 7a07724256c2 |
children |
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/* * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #define NGX_BPF_LOGBUF_SIZE (16 * 1024) static ngx_inline int ngx_bpf(enum bpf_cmd cmd, union bpf_attr *attr, unsigned int size) { return syscall(__NR_bpf, cmd, attr, size); } void ngx_bpf_program_link(ngx_bpf_program_t *program, const char *symbol, int fd) { ngx_uint_t i; ngx_bpf_reloc_t *rl; rl = program->relocs; for (i = 0; i < program->nrelocs; i++) { if (ngx_strcmp(rl[i].name, symbol) == 0) { program->ins[rl[i].offset].src_reg = 1; program->ins[rl[i].offset].imm = fd; } } } int ngx_bpf_load_program(ngx_log_t *log, ngx_bpf_program_t *program) { int fd; union bpf_attr attr; #if (NGX_DEBUG) char buf[NGX_BPF_LOGBUF_SIZE]; #endif ngx_memzero(&attr, sizeof(union bpf_attr)); attr.license = (uintptr_t) program->license; attr.prog_type = program->type; attr.insns = (uintptr_t) program->ins; attr.insn_cnt = program->nins; #if (NGX_DEBUG) /* for verifier errors */ attr.log_buf = (uintptr_t) buf; attr.log_size = NGX_BPF_LOGBUF_SIZE; attr.log_level = 1; #endif fd = ngx_bpf(BPF_PROG_LOAD, &attr, sizeof(attr)); if (fd < 0) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "failed to load BPF program"); ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "bpf verifier: %s", buf); return -1; } return fd; } int ngx_bpf_map_create(ngx_log_t *log, enum bpf_map_type type, int key_size, int value_size, int max_entries, uint32_t map_flags) { int fd; union bpf_attr attr; ngx_memzero(&attr, sizeof(union bpf_attr)); attr.map_type = type; attr.key_size = key_size; attr.value_size = value_size; attr.max_entries = max_entries; attr.map_flags = map_flags; fd = ngx_bpf(BPF_MAP_CREATE, &attr, sizeof(attr)); if (fd < 0) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "failed to create BPF map"); return NGX_ERROR; } return fd; } int ngx_bpf_map_update(int fd, const void *key, const void *value, uint64_t flags) { union bpf_attr attr; ngx_memzero(&attr, sizeof(union bpf_attr)); attr.map_fd = fd; attr.key = (uintptr_t) key; attr.value = (uintptr_t) value; attr.flags = flags; return ngx_bpf(BPF_MAP_UPDATE_ELEM, &attr, sizeof(attr)); } int ngx_bpf_map_delete(int fd, const void *key) { union bpf_attr attr; ngx_memzero(&attr, sizeof(union bpf_attr)); attr.map_fd = fd; attr.key = (uintptr_t) key; return ngx_bpf(BPF_MAP_DELETE_ELEM, &attr, sizeof(attr)); } int ngx_bpf_map_lookup(int fd, const void *key, void *value) { union bpf_attr attr; ngx_memzero(&attr, sizeof(union bpf_attr)); attr.map_fd = fd; attr.key = (uintptr_t) key; attr.value = (uintptr_t) value; return ngx_bpf(BPF_MAP_LOOKUP_ELEM, &attr, sizeof(attr)); }